Safety razor



June 27, 1939. YQNETA 2,163,992

SAFETY RAZOR Fig. 5

Fig. 2

Patented June 27, 1939 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to a safety razor wherein a guard roller is rotatably mounted on the front portion of a U-shaped frame, the blade being held, in shaving position, on the frame so that the edge of the blade may be on said roller, and

it has for its object to obtain a safety razor which has not such demerits but merits as in known safety razors.

It has been known that in safety razors of the Gilette type a blade is held by holder plates so that the front part of the blade except the edge is covered by the holder plates, and therefore shaving can be done with no fear of cutting the skin. However, when it is desired to strop the razor, the blade must be detached from the holder.

In safety razors of the Valet type, the back portion of a blade is held by holder plates so that the greater part of the blade remains uncovered, and therefore the razor can be stropped without detaching the blade from the holder. But it has no guard member provided on the upper face of the blade, and so the skin is apt to be out.

As safety razors hitherto known are provided with a guard comb, shaving filth jams between the teeth of the comb and cannot be removed easily and the part of the razor must be detached to remove it.

Thus safety razors of known types have various drawbacks. However, the present invention comprises a guard roller rotatably mounted on the front portion of the U-shaped frame so that the filth is moved into the frame. The roller thus facilitates to remove the filth and it serves as a guard member. Moreover, only the back portion of the blade is inserted between holder plates or held by suitable means, leaving the front portion uncovered, and so the razor can be stropped without detaching the blade.

, The razor according to this invention may be provided with a clamping plate so mounted on the front portion of the frame as to cover the upper face of the front part of the blade except the edge, only the back portion of the blade being held by the holder plates or pivotally mounted direct on the rear part of the frame. Thus, the

clamping plate serves not only as a clamp but also as a guard member, and so there is no fear of cutting the skin.

Further advantages of the invention will be understood from the following description referring to the drawing which illustrates a mode of working of the invention.

In the accompanying drawing, Fig. 1 is a plan view of a safety razor according to this invention,

Fig. 2 a perspective view of the same, wherein the cover is turned back, Fig. 3 another perspective view of the same, wherein the parts pivotally mounted have been turned back respectively to remove the filth or tostrop the blade, Fig. 4 a vertical cross section of the essential parts, and Fig. 5 a similar view to Fig. 4 wherein a blade having a similar shape to the ordinary razor is pivotally mounted on the rear part of the frame by suitable means.

Referring to the drawing, l is a U-shaped frame provided with a shaft 2 at the rear part, and. on the shaft 2 is pivotally mounted a blade holder 3, 3', and between the holder plates 3, 3 is inserted the back portion of a blade 4, the plate 3 being connected with the plate 3' by pieces of metal 5. The blade holder is supported in shaving position by the side edges of the frame I, and the latter is provided with bearings 6 for a guard roller at the front ends of the side portions.

In the drawing, 1 shows a guard roller mounted adjacent the blade and the front parts of both sides of the frame. A U-shaped clamping plate 8 is pivotally mounted on the shaft 9 in such a manner that the bearings 6 are interposed between the side pieces of the plate 8. The blade and the holder are clamped in shaving position on the side edges. of the frame and covered by the plate 8.

In this invention, the filth collected within the frame can be removed or the blade can be stropped very easily, turning back the clamping plate and the blade holder as shown in Fig. 3. 4 shows a blade having a similar shape to the ordinary razor; the back portion of the blade 4 may be pivotally mounted on the rear shaft of the frame by suitable means other than the blade holder 3, 3. I0 is a cover pivotally mounted on the rear shaft of the frame so as to cover the edge of the blade when the razor is not in use. I! shows a roller rotatably mounted on the rear shaft of the frame.

The razor according to this invention is provided with the guard members on both faces of the blade, that is, the clamping plate 8 and the roller '1, and so there is no fear of the skin being cut by the blade. As the clamping plate covers the front part of the blade except the edge, the counterpressure of the skin does not act direct upon the face of the blade, and therefore even the thin blade, the greater part of which projects from the holder, will not cut the skin. Furthermore, the razor can be stropped without detaching the blade but merely turning back the clamping plate and the blade holder respectively.

The blade of the razor according to this invention has sufficient elasticity required for shaving, since it is a thin blade and the greater part thereof is left uncovered by the holder.

The blade 4' also has the elasticity required for shaving as the ordinary razor, and consequently the razor according to this invention cuts well and agreeable tothe touch.

The clamping plate 8 and the roller 1 act so as to press the skin uniformly, unlike the guard comb in known razors, and therefore shaving can be done very smoothly. The roller 1 causes, due to its rotation, to move the shaving filth backwards through the front part of the frame so that the filth is collected within the frame. The filth therein can be removed easily, turning back the movable parts respectively. Moreover, shaving operation of the blade is in no way obstructed by the filth jammed under the edge of the blade. In this invention, the blalde is not so pressed by the skin that the edge of the blade is bent, and also the edge of the blade is not pressed on to the roller 1, and therefore the operation of the roller is not obstructed.

Heretofore, safety razors have been considered as being unsuitable for ladies use, since ladies skin is so delicate, and the soft hair twines round the teeth of the guard comb. However, the razor according to this invention comprises no guard comb and also it cuts. well, and therefore the razor is fit even for ladies use. In this invention, the handle of razors is dispensed with, since the present razor may be used, holding both sides of the frame by finger tips, and the latter will not become dirty, since the filth is collected within the frame. Thus, the razor has no handle, and therefore the volume is reduced, and also it is handy to keep and carry.

Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed, I believe that What I claim is:

A safety razor comprising, a U-shaped plate, a smooth surface roller mounted to rotate adjacent one edge of the plate, a clamping plate pivotably mounted to turn about the axis of said roller, a cutting blade, a holder for said blade pivotably mounted at the opposite edge of the U-shaped plate so that the cutting edge of the blade may be swung to a position adjacent said roller whereby said clamping plate may be moved over the blade to engage the upper surface thereof and maintain the cutting edge adjacent the roller when shaving.

TAKEO YONETA. 

